CN204494072U - A kind of heat insulating construction of superconduction cryogenic device - Google Patents
A kind of heat insulating construction of superconduction cryogenic device Download PDFInfo
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- CN204494072U CN204494072U CN201520099864.3U CN201520099864U CN204494072U CN 204494072 U CN204494072 U CN 204494072U CN 201520099864 U CN201520099864 U CN 201520099864U CN 204494072 U CN204494072 U CN 204494072U
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Abstract
The utility model relates to a kind of heat insulating construction of superconduction cryogenic device, comprises vacuum dewar and the cryogenic device being positioned at vacuum dewar.Cryogenic device, its input sub-miniature A connector is connected with the input sub-miniature A connector of vacuum dewar by input radio frequency connecting line, and it exports sub-miniature A connector and is connected with the output sub-miniature A connector of vacuum dewar by exporting RF connection.The outside of cryogenic device is provided with Built-in air suction material layer, intermediate insulating layer and outside heat insulation layer successively.Input radio frequency connecting line and output RF connection are between intermediate insulating layer and outside heat insulation layer.From above technological scheme, this heat insulating construction effectively can reduce vacuum dewar radiation and leak heat, improves the speed of response of vacuum dewar cooling rate and receiving machine.
Description
Technical field
The utility model relates to superconduction cryogenic device Thermo Isolation Technique field, is specifically related to a kind of heat insulating construction of superconduction cryogenic device.
Background technique
In the field such as long-range detection and space astronomy, superconduction cryogenic device because having low-loss, the characteristic of high out-of-side rejection is used widely.Superconduction cryogenic device effectively can not only improve receiving ability and the signal handling capacity of receiving machine, also can reduce the high-power impact on periphery biotic environment and electronic equipment, improve the antijamming capability of self.
In order to improve the temperature reducing superconduction cryogenic device, the speed of response improving refrigerator, vacuum dewar is usually adopted to provide low temperature environment for superconduction cryogenic device.But excessive because existing vacuum dewar internal components is more, heat is leaked in radiation, so that vacuum dewar cannot drop to enough low temperature fast, greatly reduces the speed of response of receiving machine.
Model utility content
The purpose of this utility model is the heat insulating construction providing a kind of superconduction cryogenic device, this heat insulating construction effectively can reduce vacuum dewar radiation and leak heat, and maintain the condition of high vacuum degree of vacuum dewar inside, thus improve the speed of response of vacuum dewar cooling rate and receiving machine, the feature such as stable and reliable for performance under there is low temperature, compact structure is lightweight, heat radiation screening is effective.
For achieving the above object, the utility model have employed following technological scheme:
A heat insulating construction for superconduction cryogenic device, comprises vacuum dewar and the cryogenic device being positioned at vacuum dewar.Described cryogenic device, its input sub-miniature A connector is connected with the input sub-miniature A connector of vacuum dewar by input radio frequency connecting line, and it exports sub-miniature A connector and is connected with the output sub-miniature A connector of vacuum dewar by exporting RF connection.The outside of described cryogenic device is provided with Built-in air suction material layer, intermediate insulating layer and outside heat insulation layer successively.Described input radio frequency connecting line and output RF connection are between intermediate insulating layer and outside heat insulation layer.
Described Built-in air suction material layer is made up of equally distributed getter material particles.
Described intermediate insulating layer and outside heat insulation layer are insulating structure, and the thickness of intermediate insulating layer is less than the thickness of outside heat insulation layer.Described insulating structure comprises some alternatively distributed heatshield material layer and Cryo Heat Insulation material layer from inside to outside, and the innermost layer of insulating structure and outermost surface are heatshield material layer.
Vacuum layer is provided with between described outside heat insulation layer and vacuum dewar inwall.
Low-temperature thermal insulation paper is respectively equipped with between described input radio frequency connecting line, output RF connection and intermediate insulating layer, secondary insulation layer.
Described heatshield material layer adopts metal foil, and described Cryo Heat Insulation material layer adopts low-temperature thermal insulation paper.
Described input radio frequency connecting line and output RF connection all adopt the heat insulation cable of stainless steel; The heat insulation cable of described stainless steel, its diameter is 1 ~ 2mm, and its length is 120 ~ 150mm.
Compared to the prior art, the beneficial effects of the utility model are:
The utility model by setting gradually equally distributed Built-in air suction material layer, intermediate thermal insulating layer and lateral septal thermosphere outside cryogenic device, the thermal radiation in vacuum dewar can be made to leak heat and to reduce more than 90%, vacuum dewar temperature is reduced to below 77K, thus reduce chiller load and Dewar thermal equilibrium temperature point, accelerate refrigerator temperature fall time, improve the speed of response of superconduction receiving front-end.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is side view of the present utility model;
Fig. 3 is the structural representation of insulating structure.
Wherein:
1, vacuum dewar, 2, cryogenic device, 3, Built-in air suction material layer, 4, intermediate thermal insulating layer, 5, lateral septal thermosphere, 6, RF connection, 61, input radio frequency connecting line, 67, export RF connection, 7, vacuum layer, 8, sealed seat, 9, Cryo Heat Insulation material layer, 10, heatshield material layer.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
The heat insulating construction of a kind of superconduction cryogenic device as shown in Figure 1, comprises vacuum dewar 1, is positioned at the cryogenic device 2 of vacuum dewar 1 and RF connection 6.As shown in Figure 2, vacuum dewar 1 is provided with 8 sealed seats 8, and described sealed seat 8 comprises 4 vacuum dewars input sub-miniature A connectors and 4 vacuum dewars export sub-miniature A connectors, respectively with input radio frequency connecting line 61, to export RF connection 62 corresponding.Described RF connection 6 comprises 4 input radio frequency connecting lines 61 and 4 output RF connection 62.Described cryogenic device 6, its input sub-miniature A connector is connected with the input sub-miniature A connector of vacuum dewar 1 by input radio frequency connecting line 61, and it exports sub-miniature A connector and is connected with the output sub-miniature A connector of vacuum dewar 1 by exporting RF connection 62.Described input radio frequency connecting line 61 and output RF connection 62 all adopt the heat insulation cable of stainless steel.The heat insulation cable of described stainless steel is low-loss microwave cable.The heat insulation cable of described stainless steel, its diameter is 2 ~ 4mm, and its length is 120 ~ 150mm.
As depicted in figs. 1 and 2, the outside of described cryogenic device 2 is provided with Built-in air suction material layer 3, intermediate insulating layer 4 and outside heat insulation layer 5 successively.Described input radio frequency connecting line 61 and output RF connection 62 are between intermediate insulating layer 4 and outside heat insulation layer 5.Low-temperature thermal insulation paper is respectively equipped with between described input radio frequency connecting line 61, output RF connection 62 and intermediate insulating layer 4, secondary insulation layer 5.Vacuum layer 8 is provided with between described outside heat insulation layer 5 and vacuum dewar 1 inwall.
Specifically, described Built-in air suction material layer 3 is made up of equally distributed active carbon.First a fixing device is set in the periphery of cryogenic device 2, and fixing device is divided into several equally distributed little empty rooms; Then in each little empty room, evenly place the getter material particles of equal number, thus wrap up the equally distributed Built-in air suction material layer of one deck in the periphery of cryogenic device 2.This Built-in air suction material layer 3, does not need to activate.Described Built-in air suction material layer, by matching with intermediate insulating layer and outside heat insulation layer, heat is leaked in the radiation that greatly can reduce vacuum dewar, improve and maintain the degree of vacuum of vacuum dewar, thus effectively reduce chiller load, reduce temperature fall time, improve the speed of response of superconducting receivers.The Built-in air suction material layer that the utility model adopts, have cryogenic vacuum stable performance, inspiratory effects good, without the need to features such as activating, can reuse, cost is low, grammes per square metre is low.Due to mainly cryogenic device, intermediate insulating layer and the outside heat insulation layer of the venting source in vacuum dewar, therefore, Built-in air suction material layer is placed between cryogenic device and intermediate insulating layer, tactile face and the space availability ratio of getter material can be increased, the gas enabling this Built-in air suction material layer absorb cryogenic device and heat insulation layer fast to discharge under low-temperature vacuum environment, improves the utilization ratio of getter material.
As shown in Figure 3, described intermediate insulating layer 4 and outside heat insulation layer 5 are insulating structure, and the thickness of intermediate insulating layer 4 is 1/2 of the thickness of outside heat insulation layer 5.Described insulating structure comprises some alternatively distributed heatshield material layer 10 and Cryo Heat Insulation material layer 9 from inside to outside, and the innermost layer of insulating structure and outermost surface are heatshield material layer 10.Described heatshield material layer 10 adopts aluminium foil, and described Cryo Heat Insulation material layer 9 adopts low-temperature thermal insulation paper.Intermediate insulating layer and outside heat insulation layer are evenly wrapped in the outside of cryogenic device successively, and by reinforcing two heat insulation layers at outside heat insulation layer arranged outside fastening piece, thus reduce the volume of the heat insulation layer in vacuum dewar, weight and thermal radiation area.
Heatshield material layer has that heat radiation screening performance is good, quality is light, be convenient to install, vacuum environment transfers the features such as narrow-minded; Cryo Heat Insulation material layer has that venting rate under cryogenic vacuum stable performance, vacuum is little, heat-shielding performance is excellent, lead the features such as heat is number≤1.5 × 10-4W/ (mK), thermal contact resistance is large, grammes per square metre is low.By heat insulation layer being divided into intermediate insulating layer and outside heat insulation layer, can providing convenient for RF connection assembling, and improving the utilization ratio of vacuum dewar inner space.By being evenly enclosed with intermediate insulating layer and outside heat insulation layer successively outside Built-in air suction material layer, good heat radiation screening effect can be realized, improve the degree of vacuum in Dewar, reduce chiller load and temperature fall time, make thermal equilibrium temperature point drop to below 77K, and improve superconducting receivers working life, reduce starting time and response time.In actual application, according to the topology layout of the volume size of Dewar and internal components, the thickness of intermediate thermal insulating layer and lateral septal thermosphere to be designed.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (7)
1. a heat insulating construction for superconduction cryogenic device, comprises vacuum dewar and the cryogenic device being positioned at vacuum dewar; Described cryogenic device, its input sub-miniature A connector is connected with the input sub-miniature A connector of vacuum dewar by input radio frequency connecting line, and it exports sub-miniature A connector and is connected with the output sub-miniature A connector of vacuum dewar by exporting RF connection; It is characterized in that: the outside of described cryogenic device is provided with Built-in air suction material layer, intermediate insulating layer and outside heat insulation layer successively; Described input radio frequency connecting line and output RF connection are between intermediate insulating layer and outside heat insulation layer.
2. the heat insulating construction of a kind of superconduction cryogenic device according to claim 1, is characterized in that: described Built-in air suction material layer is made up of equally distributed air suction type particle.
3. the heat insulating construction of a kind of superconduction cryogenic device according to claim 1, is characterized in that: described intermediate insulating layer and outside heat insulation layer are insulating structure, and the thickness of intermediate insulating layer is less than the thickness of outside heat insulation layer; Described insulating structure comprises some alternatively distributed heatshield material layer and Cryo Heat Insulation material layer from inside to outside, and the innermost layer of insulating structure and outermost surface are heatshield material layer.
4. the heat insulating construction of a kind of superconduction cryogenic device according to claim 1, is characterized in that: be provided with vacuum layer between described outside heat insulation layer and vacuum dewar inwall.
5. the heat insulating construction of a kind of superconduction cryogenic device according to claim 1, is characterized in that: be respectively equipped with low-temperature thermal insulation paper between described input radio frequency connecting line, output RF connection and intermediate insulating layer, secondary insulation layer.
6. the heat insulating construction of a kind of superconduction cryogenic device according to claim 3, is characterized in that: described heatshield material layer adopts metal foil, and described Cryo Heat Insulation material layer adopts low-temperature thermal insulation paper.
7. the heat insulating construction of a kind of superconduction cryogenic device according to claim 5, is characterized in that: described input radio frequency connecting line and output RF connection all adopt the heat insulation cable of stainless steel; The heat insulation cable of described stainless steel, its diameter is 1 ~ 2mm, and its length is 120 ~ 150mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520099864.3U CN204494072U (en) | 2015-02-12 | 2015-02-12 | A kind of heat insulating construction of superconduction cryogenic device |
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| CN201520099864.3U CN204494072U (en) | 2015-02-12 | 2015-02-12 | A kind of heat insulating construction of superconduction cryogenic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405470A (en) * | 2015-12-24 | 2016-03-16 | 中国科学院自动化研究所 | Ultralow-temperature double-shield enclosure thermal insulation system |
| CN110445501A (en) * | 2019-09-03 | 2019-11-12 | 上海赛滨特种电子元器件有限公司 | Communicate Dewar |
| CN113063055A (en) * | 2021-03-15 | 2021-07-02 | 西安交通大学 | Heat insulation structure applied to long-distance superconducting energy pipeline |
-
2015
- 2015-02-12 CN CN201520099864.3U patent/CN204494072U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405470A (en) * | 2015-12-24 | 2016-03-16 | 中国科学院自动化研究所 | Ultralow-temperature double-shield enclosure thermal insulation system |
| CN105405470B (en) * | 2015-12-24 | 2018-06-26 | 中国科学院自动化研究所 | A kind of ultralow temperature double cloth heat-insulation system |
| CN110445501A (en) * | 2019-09-03 | 2019-11-12 | 上海赛滨特种电子元器件有限公司 | Communicate Dewar |
| CN113063055A (en) * | 2021-03-15 | 2021-07-02 | 西安交通大学 | Heat insulation structure applied to long-distance superconducting energy pipeline |
| CN113063055B (en) * | 2021-03-15 | 2022-06-07 | 西安交通大学 | Heat insulation structure applied to long-distance superconducting energy pipeline |
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